| Similarity | Rank | |
|---|---|---|
| PDE5 | 0.863 | 36875 |
| guanosine | 0.842 | 98672 |
| phosphodiesterase | 0.841 | 53286 |
| PDE-5 | 0.834 | 59128 |
| monophosphate | 0.822 | 90460 |
| cavernosum | 0.822 | 79648 |
| Sildenafil | 0.783 | 23972 |
| GMP | 0.781 | 43267 |
| Tadalafil | 0.770 | 37951 |
| PDE | 0.769 | 72120 |
| Dapoxetine | 0.765 | 69436 |
| Vardenafil | 0.765 | 62777 |
| vasodilation | 0.757 | 78390 |
| erectile | 0.753 | 8147 |
| vasodilator | 0.753 | 91177 |
| nitric | 0.750 | 25998 |
| cavernosa | 0.747 | 55342 |
| Citrate | 0.746 | 40345 |
| Tadalis | 0.746 | 98791 |
| L-arginine | 0.745 | 67070 |
| priapism | 0.744 | 70559 |
| Revatio | 0.743 | 93669 |
| Levitra | 0.740 | 16011 |
| Edegra | 0.735 | 95647 |
| Caverta | 0.726 | 78714 |